<template>
  <div class="goods">
    <div class="scroll-nav-wrapper">
      <cube-scroll-nav :side="true" :data="goods" :options="scrollOptions" v-if="goods.length">
        <template slot="bar" slot-scope="props">
          <cube-scroll-nav-bar
            direction="vertical"
            :labels="props.labels"
            :txts="barTxts"
            :current="props.current"
          >
            <template slot-scope="props">
              <div class="text">
                <support-ico v-if="props.txt.type >= 1" :size="3" :type="props.txt.type"></support-ico>
                <span>{{props.txt.name}}</span>
                <span class="num" v-if="props.txt.count">
                  <bubble :num="props.txt.count"></bubble>
                </span>
              </div>
            </template>
          </cube-scroll-nav-bar>
        </template>
        <cube-scroll-nav-panel
          v-for="good in goods"
          :key="good.name"
          :label="good.name"
          :title="good.name"
        >
          <ul>
            <li
              v-for="food in good.foods"
              :key="food.name"
              class="food-item"
              @click="selectFood(food)"
            >
              <div class="icon">
                <img width="57" height="57" :src="food.icon" />
              </div>
              <div class="content">
                <h2 class="name">{{food.name}}</h2>
                <p class="desc">{{food.description}}</p>
                <div class="extra">
                  <span class="count">月售{{food.sellCount}}份</span>
                  <span>好评率{{food.rating}}%</span>
                </div>
                <div class="price">
                  <span class="now">￥{{food.price}}</span>
                  <span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
                </div>
                <div class="cart-control-wrapper">
                  <cart-control :food="food" @add="onAdd"></cart-control>
                </div>
              </div>
            </li>
          </ul>
        </cube-scroll-nav-panel>
      </cube-scroll-nav>
    </div>
    <div class="shop-cart-wrapper">
      <shop-cart
        ref="shopCart"
        :select-foods="selectFoods"
        :delivery-price="seller.deliveryPrice"
        :min-price="seller.minPrice"
      ></shop-cart>
    </div>
  </div>
</template>
<script>
import { getGoods } from 'api'
import ShopCart from 'components/shop-cart/shop-cart'
import CartControl from 'components/cart-control/cart-control'
import SupportIco from 'components/support-ico/support-ico'
import Bubble from 'components/bubble/bubble'

export default {
  name: 'goods',
  props: {
    data: {
      type: Object,
      default: () => {}
    }
  },
  data() {
    return {
      goods: [],
      scrollOptions: {
        click: false,
        directionLockThreshold: 0
      },
      selectedFood: {}
    }
  },
  computed: {
    seller() {
      return this.data.seller
    },
    selectFoods() {
      let ret = []
      this.goods.forEach(good => {
        good.foods.forEach(food => {
          if (food.count) ret.push(food)
        })
      })
      return ret
    },
    barTxts() {
      let ret = []
      this.goods.forEach(good => {
        const { type, name, foods } = good
        let count = 0
        foods.forEach(food => {
          count += food.count || 0
        })
        ret.push({ type, name, count })
      })
      return ret
    }
  },
  methods: {
    fetch() {
      if (!this.fetched) {
        this.fetched = true
        getGoods({
          id: this.seller.id
        }).then(goods => {
          this.goods = goods
        })
      }
    },
    onAdd(el) {
      this.$refs.shopCart.drop(el)
    },
    selectFood(food) {
      this.selectedFood = food
      this._showFood()
      this._showShopCartSticky()
    },
    _showFood() {
      this.foodComp =
        this.foodComp ||
        this.$createFood({
          $props: {
            food: 'selectedFood'
          },
          $events: {
            leave: () => {
              this._hideShopCartList()
            },
            add: el => {
              this.shopCartStickyComp.drop(el)
            }
          }
        })
      this.foodComp.show()
    },
    _showShopCartSticky() {
      this.shopCartStickyComp =
        this.shopCartStickyComp ||
        this.$createShopCartSticky({
          $props: {
            selectFoods: 'selectFoods',
            deliveryPrice: this.seller.deliveryPrice,
            minPrice: this.seller.minPrice,
            fold: true
          }
        })
      this.shopCartStickyComp.show()
    },
    _hideShopCartList() {
      this.shopCartStickyComp.hide()
    }
  },
  components: {
    ShopCart,
    CartControl,
    SupportIco,
    Bubble
  }
}
</script>

<style lang="stylus" scoped>
@import '~common/stylus/mixin'
@import '~common/stylus/variable'
.goods
  position relative
  text-align left
  height 100%
  .scroll-nav-wrapper
    position absolute
    width 100%
    top 0
    left 0
    bottom 48px
  >>> .cube-scroll-nav-bar
    width 80px
    white-space normal
    overflow hidden
  >>> .cube-scroll-nav-bar-item
    padding 0 10px
    display flex
    align-items center
    height 56px
    line-height 14px
    font-size $fontsize-small
    background $color-background-ssss
    .text
      flex 1
      position relative
    .num
      position absolute
      right -8px
      top -10px
    .support-ico
      display inline-block
      vertical-align top
      margin-right 4px
  >>> .cube-scroll-nav-bar-item_active
    background $color-white
    color $color-dark-grey
  >>> .cube-scroll-nav-panel-title
    padding-left 14px
    height 26px
    line-height 26px
    border-left 2px solid $color-col-line
    font-size $fontsize-small
    color $color-grey
    background $color-background-ssss
  .food-item
    display flex
    margin 18px
    padding-bottom 18px
    position relative
    &:last-child
      border-none()
      margin-bottom 0
    .icon
      flex 0 0 57px
      margin-right 10px
      img
        height auto
    .content
      flex 1
      .name
        margin 2px 0 8px 0
        height 14px
        line-height 14px
        font-size $fontsize-medium
        color $color-dark-grey
      .desc, .extra
        line-height 10px
        font-size $fontsize-small-s
        color $color-light-grey
      .desc
        line-height 12px
        margin-bottom 8px
      .extra
        .count
          margin-right 12px
      .price
        font-weight 700
        line-height 24px
        .now
          margin-right 8px
          font-size $fontsize-medium
          color $color-red
        .old
          text-decoration line-through
          font-size $fontsize-small-s
          color $color-light-grey
    .cart-control-wrapper
      position absolute
      right 0
      bottom 12px
  .shop-cart-wrapper
    position absolute
    left 0
    bottom 0
    z-index 50
    width 100%
    height 48px
</style>
